Is the higher the PHP version, the better? Do we need to upgrade?

In fact, I have always had a doubt in my mind: is the higher the PHP version, the more stable it is, and the higher the better? In general, the newer the version, the better. Take wordpress as an example. In the PHP7.0 environment, the speed is about 3 times faster than the previous version.

At present, the highest version of PHP is 7.0.7, but we generally use php5.3.x, and even a considerable number of people use PHP5.2.X version. The main reason is that many programs do not support the new PHP version, especially some programs that have not been updated for a long time. They only support the PHP5.2.X series version. Which version to choose depends on the program you use and the corresponding template. Instead of blindly pursuing an exorbitant version. If you want to be compatible with more programs, it is recommended to use PHP5.3.X version. If you want to pursue higher performance, PHP5.6.X or even PHP7.0 series are recommended.

At present, the WordPress program fully supports PHP7.0. However, some templates that have not been updated have many problems under 7.0. Therefore, it is recommended that partners who use the WordPress program pay special attention to their own use when choosing the PHP7.0 version. Check whether the template and plug-ins are compatible. If it is a commercial template, it is recommended to consult the author and do not blindly upgrade and replace it.

Currently, this site uses the AMH5.2 commercial version. The PHP version can be downloaded and combined by yourself. Due to factors such as templates, PHP5.6.19 is used. Therefore, I would like to remind you not to blindly pursue a version that is too high, and configure and choose according to the best PHP environment for your program. The newer the version, there will be more bugs at the beginning, and the stability may also be compromised. The old version has been tested for a long time after all!

Download address for each version of PHP: http://php.net/downloads.php

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